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https://github.com/Steffo99/unimore-hpc-assignments.git
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106 lines
3 KiB
C
106 lines
3 KiB
C
#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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/* Include polybench common header. */
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#include <polybench.h>
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/* Include benchmark-specific header. */
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/* Default data type is int, default size is 50. */
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#include "dynprog.h"
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/* Array initialization. */
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static void init_array(int length,
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DATA_TYPE POLYBENCH_2D(c, LENGTH, LENGTH, length, length),
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DATA_TYPE POLYBENCH_2D(W, LENGTH, LENGTH, length, length))
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{
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int i, j;
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for (i = 0; i < length; i++)
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for (j = 0; j < length; j++)
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{
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c[i][j] = i * j % 2;
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W[i][j] = ((DATA_TYPE)i - j) / length;
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}
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}
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/* DCE code. Must scan the entire live-out data.
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Can be used also to check the correctness of the output. */
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static void print_array(DATA_TYPE out)
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{
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fprintf(stderr, DATA_PRINTF_MODIFIER, out);
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fprintf(stderr, "\n");
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}
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/* Main computational kernel. The whole function will be timed,
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including the call and return. */
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static void kernel_dynprog(int tsteps, int length,
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DATA_TYPE POLYBENCH_2D(c, LENGTH, LENGTH, length, length),
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DATA_TYPE POLYBENCH_2D(W, LENGTH, LENGTH, length, length),
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DATA_TYPE POLYBENCH_3D(sum_c, LENGTH, LENGTH, LENGTH, length, length, length),
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DATA_TYPE *out)
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{
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int iter, i, j, k;
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DATA_TYPE out_l = 0;
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for (iter = 0; iter < _PB_TSTEPS; iter++)
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{
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for (i = 0; i <= _PB_LENGTH - 1; i++)
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for (j = 0; j <= _PB_LENGTH - 1; j++)
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c[i][j] = 0;
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for (i = 0; i <= _PB_LENGTH - 2; i++)
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{
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for (j = i + 1; j <= _PB_LENGTH - 1; j++)
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{
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sum_c[i][j][i] = 0;
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for (k = i + 1; k <= j - 1; k++)
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sum_c[i][j][k] = sum_c[i][j][k - 1] + c[i][k] + c[k][j];
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c[i][j] = sum_c[i][j][j - 1] + W[i][j];
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}
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}
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out_l += c[0][_PB_LENGTH - 1];
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}
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*out = out_l;
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}
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int main(int argc, char **argv)
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{
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/* Retrieve problem size. */
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int length = LENGTH;
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int tsteps = TSTEPS;
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/* Variable declaration/allocation. */
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DATA_TYPE out;
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POLYBENCH_3D_ARRAY_DECL(sum_c, DATA_TYPE, LENGTH, LENGTH, LENGTH, length, length, length);
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POLYBENCH_2D_ARRAY_DECL(c, DATA_TYPE, LENGTH, LENGTH, length, length);
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POLYBENCH_2D_ARRAY_DECL(W, DATA_TYPE, LENGTH, LENGTH, length, length);
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/* Initialize array(s). */
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init_array(length, POLYBENCH_ARRAY(c), POLYBENCH_ARRAY(W));
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/* Start timer. */
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polybench_start_instruments;
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/* Run kernel. */
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kernel_dynprog(tsteps, length,
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POLYBENCH_ARRAY(c),
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POLYBENCH_ARRAY(W),
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POLYBENCH_ARRAY(sum_c),
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&out);
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/* Stop and print timer. */
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polybench_stop_instruments;
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polybench_print_instruments;
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/* Prevent dead-code elimination. All live-out data must be printed
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by the function call in argument. */
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polybench_prevent_dce(print_array(out));
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/* Be clean. */
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POLYBENCH_FREE_ARRAY(sum_c);
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POLYBENCH_FREE_ARRAY(c);
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POLYBENCH_FREE_ARRAY(W);
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return 0;
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}
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